1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * newport_con.c: Abscon for newport hardware 4 * 5 * (C) 1998 Thomas Bogendoerfer (tsbogend@alpha.franken.de) 6 * (C) 1999 Ulf Carlsson (ulfc@thepuffingruop.com) 7 * 8 * This driver is based on sgicons.c and cons_newport. 9 * 10 * Copyright (C) 1996 David S. Miller (davem@davemloft.net) 11 * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx) 12 */ 13 #include <linux/init.h> 14 #include <linux/kernel.h> 15 #include <linux/errno.h> 16 #include <linux/kd.h> 17 #include <linux/selection.h> 18 #include <linux/console.h> 19 #include <linux/vt_kern.h> 20 #include <linux/mm.h> 21 #include <linux/module.h> 22 #include <linux/slab.h> 23 24 #include <asm/io.h> 25 #include <linux/uaccess.h> 26 #include <asm/page.h> 27 #include <asm/gio_device.h> 28 29 #include <video/newport.h> 30 31 #include <linux/linux_logo.h> 32 #include <linux/font.h> 33 34 #define NEWPORT_LEN 0x10000 35 36 #define FONT_DATA ((unsigned char *)font_vga_8x16.data) 37 38 /* borrowed from fbcon.c */ 39 #define REFCOUNT(fd) (((int *)(fd))[-1]) 40 #define FNTSIZE(fd) (((int *)(fd))[-2]) 41 #define FNTCHARCNT(fd) (((int *)(fd))[-3]) 42 #define FONT_EXTRA_WORDS 3 43 44 static unsigned char *font_data[MAX_NR_CONSOLES]; 45 46 static struct newport_regs *npregs; 47 static unsigned long newport_addr; 48 49 static int logo_active; 50 static int topscan; 51 static int xcurs_correction = 29; 52 static int newport_xsize; 53 static int newport_ysize; 54 static int newport_has_init; 55 56 static int newport_set_def_font(int unit, struct console_font *op); 57 58 #define BMASK(c) (c << 24) 59 60 #define RENDER(regs, cp) do { \ 61 (regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \ 62 (regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \ 63 (regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \ 64 (regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \ 65 (regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \ 66 (regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \ 67 (regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \ 68 (regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \ 69 } while(0) 70 71 #define TESTVAL 0xdeadbeef 72 #define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11) 73 74 static inline void newport_render_background(int xstart, int ystart, 75 int xend, int yend, int ci) 76 { 77 newport_wait(npregs); 78 npregs->set.wrmask = 0xffffffff; 79 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 80 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 81 | NPORT_DMODE0_STOPY); 82 npregs->set.colori = ci; 83 npregs->set.xystarti = 84 (xstart << 16) | ((ystart + topscan) & 0x3ff); 85 npregs->go.xyendi = 86 ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff); 87 } 88 89 static inline void newport_init_cmap(void) 90 { 91 unsigned short i; 92 93 for (i = 0; i < 16; i++) { 94 newport_bfwait(npregs); 95 newport_cmap_setaddr(npregs, color_table[i]); 96 newport_cmap_setrgb(npregs, 97 default_red[i], 98 default_grn[i], default_blu[i]); 99 } 100 } 101 102 static const struct linux_logo *newport_show_logo(void) 103 { 104 #ifdef CONFIG_LOGO_SGI_CLUT224 105 const struct linux_logo *logo = fb_find_logo(8); 106 const unsigned char *clut; 107 const unsigned char *data; 108 unsigned long i; 109 110 if (!logo) 111 return NULL; 112 clut = logo->clut; 113 data = logo->data; 114 115 for (i = 0; i < logo->clutsize; i++) { 116 newport_bfwait(npregs); 117 newport_cmap_setaddr(npregs, i + 0x20); 118 newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]); 119 clut += 3; 120 } 121 122 newport_wait(npregs); 123 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 124 NPORT_DMODE0_CHOST); 125 126 npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0); 127 npregs->set.xyendi = ((newport_xsize - 1) << 16); 128 newport_wait(npregs); 129 130 for (i = 0; i < logo->width*logo->height; i++) 131 npregs->go.hostrw0 = *data++ << 24; 132 133 return logo; 134 #else 135 return NULL; 136 #endif /* CONFIG_LOGO_SGI_CLUT224 */ 137 } 138 139 static inline void newport_clear_screen(int xstart, int ystart, int xend, 140 int yend, int ci) 141 { 142 if (logo_active) 143 return; 144 145 newport_wait(npregs); 146 npregs->set.wrmask = 0xffffffff; 147 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 148 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX 149 | NPORT_DMODE0_STOPY); 150 npregs->set.colori = ci; 151 npregs->set.xystarti = (xstart << 16) | ystart; 152 npregs->go.xyendi = (xend << 16) | yend; 153 } 154 155 static inline void newport_clear_lines(int ystart, int yend, int ci) 156 { 157 ystart = ((ystart << 4) + topscan) & 0x3ff; 158 yend = ((yend << 4) + topscan + 15) & 0x3ff; 159 newport_clear_screen(0, ystart, 1280 + 63, yend, ci); 160 } 161 162 static void newport_reset(void) 163 { 164 unsigned short treg; 165 int i; 166 167 newport_wait(npregs); 168 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 169 newport_vc2_set(npregs, VC2_IREG_CONTROL, 170 (treg | VC2_CTRL_EVIDEO)); 171 172 treg = newport_vc2_get(npregs, VC2_IREG_CENTRY); 173 newport_vc2_set(npregs, VC2_IREG_RADDR, treg); 174 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 175 NPORT_DMODE_W2 | VC2_PROTOCOL); 176 for (i = 0; i < 128; i++) { 177 newport_bfwait(npregs); 178 if (i == 92 || i == 94) 179 npregs->set.dcbdata0.byshort.s1 = 0xff00; 180 else 181 npregs->set.dcbdata0.byshort.s1 = 0x0000; 182 } 183 184 newport_init_cmap(); 185 186 /* turn off popup plane */ 187 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 188 XM9_CRS_CONFIG | NPORT_DMODE_W1); 189 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 190 npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL | 191 XM9_CRS_CONFIG | NPORT_DMODE_W1); 192 npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE; 193 194 topscan = 0; 195 npregs->cset.topscan = 0x3ff; 196 npregs->cset.xywin = (4096 << 16) | 4096; 197 198 /* Clear the screen. */ 199 newport_clear_screen(0, 0, 1280 + 63, 1024, 0); 200 } 201 202 /* 203 * calculate the actual screen size by reading 204 * the video timing out of the VC2 205 */ 206 static void newport_get_screensize(void) 207 { 208 int i, cols; 209 unsigned short ventry, treg; 210 unsigned short linetable[128]; /* should be enough */ 211 212 ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY); 213 newport_vc2_set(npregs, VC2_IREG_RADDR, ventry); 214 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 215 NPORT_DMODE_W2 | VC2_PROTOCOL); 216 for (i = 0; i < 128; i++) { 217 newport_bfwait(npregs); 218 linetable[i] = npregs->set.dcbdata0.byshort.s1; 219 } 220 221 newport_xsize = newport_ysize = 0; 222 for (i = 0; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; i += 2) { 223 cols = 0; 224 newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]); 225 npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM | 226 NPORT_DMODE_W2 | VC2_PROTOCOL); 227 do { 228 newport_bfwait(npregs); 229 treg = npregs->set.dcbdata0.byshort.s1; 230 if ((treg & 1) == 0) 231 cols += (treg >> 7) & 0xfe; 232 if ((treg & 0x80) == 0) { 233 newport_bfwait(npregs); 234 treg = npregs->set.dcbdata0.byshort.s1; 235 } 236 } while ((treg & 0x8000) == 0); 237 if (cols) { 238 if (cols > newport_xsize) 239 newport_xsize = cols; 240 newport_ysize += linetable[i + 1]; 241 } 242 } 243 printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize); 244 } 245 246 static void newport_get_revisions(void) 247 { 248 unsigned int tmp; 249 unsigned int board_rev; 250 unsigned int rex3_rev; 251 unsigned int vc2_rev; 252 unsigned int cmap_rev; 253 unsigned int xmap9_rev; 254 unsigned int bt445_rev; 255 unsigned int bitplanes; 256 257 rex3_rev = npregs->cset.status & NPORT_STAT_VERS; 258 259 npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL | 260 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 261 tmp = npregs->set.dcbdata0.bybytes.b3; 262 cmap_rev = tmp & 7; 263 board_rev = (tmp >> 4) & 7; 264 bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24; 265 266 npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL | 267 NCMAP_REGADDR_RREG | NPORT_DMODE_W1); 268 tmp = npregs->set.dcbdata0.bybytes.b3; 269 if ((tmp & 7) < cmap_rev) 270 cmap_rev = (tmp & 7); 271 272 vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7; 273 274 npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL | 275 XM9_CRS_REVISION | NPORT_DMODE_W1); 276 xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7; 277 278 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 279 BT445_CSR_ADDR_REG | NPORT_DMODE_W1); 280 npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG; 281 npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL | 282 BT445_CSR_REVISION | NPORT_DMODE_W1); 283 bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a; 284 285 #define L(a) (char)('A'+(a)) 286 printk 287 ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n", 288 board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev), 289 L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev)); 290 #undef L 291 292 if (board_rev == 3) /* I don't know all affected revisions */ 293 xcurs_correction = 21; 294 } 295 296 static void newport_exit(void) 297 { 298 int i; 299 300 /* free memory used by user font */ 301 for (i = 0; i < MAX_NR_CONSOLES; i++) 302 newport_set_def_font(i, NULL); 303 } 304 305 /* Can't be __init, do_take_over_console may call it later */ 306 static const char *newport_startup(void) 307 { 308 int i; 309 310 npregs->cset.config = NPORT_CFG_GD0; 311 312 if (newport_wait(npregs)) 313 goto out_unmap; 314 315 npregs->set.xstarti = TESTVAL; 316 if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL)) 317 goto out_unmap; 318 319 for (i = 0; i < MAX_NR_CONSOLES; i++) 320 font_data[i] = FONT_DATA; 321 322 newport_reset(); 323 newport_get_revisions(); 324 newport_get_screensize(); 325 newport_has_init = 1; 326 327 return "SGI Newport"; 328 329 out_unmap: 330 return NULL; 331 } 332 333 static void newport_init(struct vc_data *vc, int init) 334 { 335 int cols, rows; 336 337 cols = newport_xsize / 8; 338 rows = newport_ysize / 16; 339 vc->vc_can_do_color = 1; 340 if (init) { 341 vc->vc_cols = cols; 342 vc->vc_rows = rows; 343 } else 344 vc_resize(vc, cols, rows); 345 } 346 347 static void newport_deinit(struct vc_data *c) 348 { 349 if (!con_is_bound(&newport_con) && newport_has_init) { 350 newport_exit(); 351 newport_has_init = 0; 352 } 353 } 354 355 static void newport_clear(struct vc_data *vc, int sy, int sx, int height, 356 int width) 357 { 358 int xend = ((sx + width) << 3) - 1; 359 int ystart = ((sy << 4) + topscan) & 0x3ff; 360 int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff; 361 362 if (logo_active) 363 return; 364 365 if (ystart < yend) { 366 newport_clear_screen(sx << 3, ystart, xend, yend, 367 (vc->state.color & 0xf0) >> 4); 368 } else { 369 newport_clear_screen(sx << 3, ystart, xend, 1023, 370 (vc->state.color & 0xf0) >> 4); 371 newport_clear_screen(sx << 3, 0, xend, yend, 372 (vc->state.color & 0xf0) >> 4); 373 } 374 } 375 376 static void newport_putc(struct vc_data *vc, int charattr, int ypos, 377 int xpos) 378 { 379 unsigned char *p; 380 381 p = &font_data[vc->vc_num][(charattr & 0xff) << 4]; 382 charattr = (charattr >> 8) & 0xff; 383 xpos <<= 3; 384 ypos <<= 4; 385 386 newport_render_background(xpos, ypos, xpos, ypos, 387 (charattr & 0xf0) >> 4); 388 389 /* Set the color and drawing mode. */ 390 newport_wait(npregs); 391 npregs->set.colori = charattr & 0xf; 392 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 393 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 394 NPORT_DMODE0_L32); 395 396 /* Set coordinates for bitmap operation. */ 397 npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff); 398 npregs->set.xyendi = ((xpos + 7) << 16); 399 newport_wait(npregs); 400 401 /* Go, baby, go... */ 402 RENDER(npregs, p); 403 } 404 405 static void newport_putcs(struct vc_data *vc, const unsigned short *s, 406 int count, int ypos, int xpos) 407 { 408 int i; 409 int charattr; 410 unsigned char *p; 411 412 charattr = (scr_readw(s) >> 8) & 0xff; 413 414 xpos <<= 3; 415 ypos <<= 4; 416 417 if (!logo_active) 418 /* Clear the area behing the string */ 419 newport_render_background(xpos, ypos, 420 xpos + ((count - 1) << 3), ypos, 421 (charattr & 0xf0) >> 4); 422 423 newport_wait(npregs); 424 425 /* Set the color and drawing mode. */ 426 npregs->set.colori = charattr & 0xf; 427 npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | 428 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB | 429 NPORT_DMODE0_L32); 430 431 for (i = 0; i < count; i++, xpos += 8) { 432 p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4]; 433 434 newport_wait(npregs); 435 436 /* Set coordinates for bitmap operation. */ 437 npregs->set.xystarti = 438 (xpos << 16) | ((ypos + topscan) & 0x3ff); 439 npregs->set.xyendi = ((xpos + 7) << 16); 440 441 /* Go, baby, go... */ 442 RENDER(npregs, p); 443 } 444 } 445 446 static void newport_cursor(struct vc_data *vc, int mode) 447 { 448 unsigned short treg; 449 int xcurs, ycurs; 450 451 switch (mode) { 452 case CM_ERASE: 453 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 454 newport_vc2_set(npregs, VC2_IREG_CONTROL, 455 (treg & ~(VC2_CTRL_ECDISP))); 456 break; 457 458 case CM_MOVE: 459 case CM_DRAW: 460 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 461 newport_vc2_set(npregs, VC2_IREG_CONTROL, 462 (treg | VC2_CTRL_ECDISP)); 463 xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2; 464 ycurs = ((xcurs / vc->vc_cols) << 4) + 31; 465 xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction; 466 newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs); 467 newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs); 468 } 469 } 470 471 static int newport_switch(struct vc_data *vc) 472 { 473 static int logo_drawn = 0; 474 475 topscan = 0; 476 npregs->cset.topscan = 0x3ff; 477 478 if (!logo_drawn) { 479 if (newport_show_logo()) { 480 logo_drawn = 1; 481 logo_active = 1; 482 } 483 } 484 485 return 1; 486 } 487 488 static int newport_blank(struct vc_data *c, int blank, int mode_switch) 489 { 490 unsigned short treg; 491 492 if (blank == 0) { 493 /* unblank console */ 494 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 495 newport_vc2_set(npregs, VC2_IREG_CONTROL, 496 (treg | VC2_CTRL_EDISP)); 497 } else { 498 /* blank console */ 499 treg = newport_vc2_get(npregs, VC2_IREG_CONTROL); 500 newport_vc2_set(npregs, VC2_IREG_CONTROL, 501 (treg & ~(VC2_CTRL_EDISP))); 502 } 503 return 1; 504 } 505 506 static int newport_set_font(int unit, struct console_font *op) 507 { 508 int w = op->width; 509 int h = op->height; 510 int size = h * op->charcount; 511 int i; 512 unsigned char *new_data, *data = op->data, *p; 513 514 /* ladis: when I grow up, there will be a day... and more sizes will 515 * be supported ;-) */ 516 if ((w != 8) || (h != 16) 517 || (op->charcount != 256 && op->charcount != 512)) 518 return -EINVAL; 519 520 if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, 521 GFP_USER))) return -ENOMEM; 522 523 new_data += FONT_EXTRA_WORDS * sizeof(int); 524 FNTSIZE(new_data) = size; 525 FNTCHARCNT(new_data) = op->charcount; 526 REFCOUNT(new_data) = 0; /* usage counter */ 527 528 p = new_data; 529 for (i = 0; i < op->charcount; i++) { 530 memcpy(p, data, h); 531 data += 32; 532 p += h; 533 } 534 535 /* check if font is already used by other console */ 536 for (i = 0; i < MAX_NR_CONSOLES; i++) { 537 if (font_data[i] != FONT_DATA 538 && FNTSIZE(font_data[i]) == size 539 && !memcmp(font_data[i], new_data, size)) { 540 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int)); 541 /* current font is the same as the new one */ 542 if (i == unit) 543 return 0; 544 new_data = font_data[i]; 545 break; 546 } 547 } 548 /* old font is user font */ 549 if (font_data[unit] != FONT_DATA) { 550 if (--REFCOUNT(font_data[unit]) == 0) 551 kfree(font_data[unit] - 552 FONT_EXTRA_WORDS * sizeof(int)); 553 } 554 REFCOUNT(new_data)++; 555 font_data[unit] = new_data; 556 557 return 0; 558 } 559 560 static int newport_set_def_font(int unit, struct console_font *op) 561 { 562 if (font_data[unit] != FONT_DATA) { 563 if (--REFCOUNT(font_data[unit]) == 0) 564 kfree(font_data[unit] - 565 FONT_EXTRA_WORDS * sizeof(int)); 566 font_data[unit] = FONT_DATA; 567 } 568 569 return 0; 570 } 571 572 static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name) 573 { 574 return newport_set_def_font(vc->vc_num, op); 575 } 576 577 static int newport_font_set(struct vc_data *vc, struct console_font *font, unsigned flags) 578 { 579 return newport_set_font(vc->vc_num, font); 580 } 581 582 static bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b, 583 enum con_scroll dir, unsigned int lines) 584 { 585 int count, x, y; 586 unsigned short *s, *d; 587 unsigned short chattr; 588 589 logo_active = 0; /* it's time to disable the logo now.. */ 590 591 if (t == 0 && b == vc->vc_rows) { 592 if (dir == SM_UP) { 593 topscan = (topscan + (lines << 4)) & 0x3ff; 594 newport_clear_lines(vc->vc_rows - lines, 595 vc->vc_rows - 1, 596 (vc->state.color & 0xf0) >> 4); 597 } else { 598 topscan = (topscan + (-lines << 4)) & 0x3ff; 599 newport_clear_lines(0, lines - 1, 600 (vc->state.color & 0xf0) >> 4); 601 } 602 npregs->cset.topscan = (topscan - 1) & 0x3ff; 603 return false; 604 } 605 606 count = (b - t - lines) * vc->vc_cols; 607 if (dir == SM_UP) { 608 x = 0; 609 y = t; 610 s = (unsigned short *) (vc->vc_origin + 611 vc->vc_size_row * (t + lines)); 612 d = (unsigned short *) (vc->vc_origin + 613 vc->vc_size_row * t); 614 while (count--) { 615 chattr = scr_readw(s++); 616 if (chattr != scr_readw(d)) { 617 newport_putc(vc, chattr, y, x); 618 scr_writew(chattr, d); 619 } 620 d++; 621 if (++x == vc->vc_cols) { 622 x = 0; 623 y++; 624 } 625 } 626 d = (unsigned short *) (vc->vc_origin + 627 vc->vc_size_row * (b - lines)); 628 x = 0; 629 y = b - lines; 630 for (count = 0; count < (lines * vc->vc_cols); count++) { 631 if (scr_readw(d) != vc->vc_video_erase_char) { 632 newport_putc(vc, vc->vc_video_erase_char, 633 y, x); 634 scr_writew(vc->vc_video_erase_char, d); 635 } 636 d++; 637 if (++x == vc->vc_cols) { 638 x = 0; 639 y++; 640 } 641 } 642 } else { 643 x = vc->vc_cols - 1; 644 y = b - 1; 645 s = (unsigned short *) (vc->vc_origin + 646 vc->vc_size_row * (b - lines) - 2); 647 d = (unsigned short *) (vc->vc_origin + 648 vc->vc_size_row * b - 2); 649 while (count--) { 650 chattr = scr_readw(s--); 651 if (chattr != scr_readw(d)) { 652 newport_putc(vc, chattr, y, x); 653 scr_writew(chattr, d); 654 } 655 d--; 656 if (x-- == 0) { 657 x = vc->vc_cols - 1; 658 y--; 659 } 660 } 661 d = (unsigned short *) (vc->vc_origin + 662 vc->vc_size_row * t); 663 x = 0; 664 y = t; 665 for (count = 0; count < (lines * vc->vc_cols); count++) { 666 if (scr_readw(d) != vc->vc_video_erase_char) { 667 newport_putc(vc, vc->vc_video_erase_char, 668 y, x); 669 scr_writew(vc->vc_video_erase_char, d); 670 } 671 d++; 672 if (++x == vc->vc_cols) { 673 x = 0; 674 y++; 675 } 676 } 677 } 678 return true; 679 } 680 681 static int newport_set_origin(struct vc_data *vc) 682 { 683 return 0; 684 } 685 686 static void newport_save_screen(struct vc_data *vc) { } 687 688 const struct consw newport_con = { 689 .owner = THIS_MODULE, 690 .con_startup = newport_startup, 691 .con_init = newport_init, 692 .con_deinit = newport_deinit, 693 .con_clear = newport_clear, 694 .con_putc = newport_putc, 695 .con_putcs = newport_putcs, 696 .con_cursor = newport_cursor, 697 .con_scroll = newport_scroll, 698 .con_switch = newport_switch, 699 .con_blank = newport_blank, 700 .con_font_set = newport_font_set, 701 .con_font_default = newport_font_default, 702 .con_set_origin = newport_set_origin, 703 .con_save_screen = newport_save_screen 704 }; 705 706 static int newport_probe(struct gio_device *dev, 707 const struct gio_device_id *id) 708 { 709 int err; 710 711 if (!dev->resource.start) 712 return -EINVAL; 713 714 if (npregs) 715 return -EBUSY; /* we only support one Newport as console */ 716 717 newport_addr = dev->resource.start + 0xF0000; 718 if (!request_mem_region(newport_addr, NEWPORT_LEN, "Newport")) 719 return -ENODEV; 720 721 npregs = (struct newport_regs *)/* ioremap cannot fail */ 722 ioremap(newport_addr, sizeof(struct newport_regs)); 723 console_lock(); 724 err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); 725 console_unlock(); 726 727 if (err) { 728 iounmap((void *)npregs); 729 release_mem_region(newport_addr, NEWPORT_LEN); 730 } 731 return err; 732 } 733 734 static void newport_remove(struct gio_device *dev) 735 { 736 give_up_console(&newport_con); 737 iounmap((void *)npregs); 738 release_mem_region(newport_addr, NEWPORT_LEN); 739 } 740 741 static struct gio_device_id newport_ids[] = { 742 { .id = 0x7e }, 743 { .id = 0xff } 744 }; 745 746 MODULE_ALIAS("gio:7e"); 747 748 static struct gio_driver newport_driver = { 749 .name = "newport", 750 .id_table = newport_ids, 751 .probe = newport_probe, 752 .remove = newport_remove, 753 }; 754 755 int __init newport_console_init(void) 756 { 757 return gio_register_driver(&newport_driver); 758 } 759 760 void __exit newport_console_exit(void) 761 { 762 gio_unregister_driver(&newport_driver); 763 } 764 765 module_init(newport_console_init); 766 module_exit(newport_console_exit); 767 768 MODULE_LICENSE("GPL"); 769